25A is not a rating for your basic Romex 12AWG or a 12ga extension cord,
though it could probably carry that current for awhile before it starts
getting toasty. It would have to have the higher temp rating. If you
have ever wired up a cooktop or oven, they have pretty small wires
attached to them, but they appear to have some other kind of insulation,
which is good for higher temps/higher currents, not the basic plastic
stuff on Romex.
--R
On 11/3/12 12:58 PM, Brian Toscano wrote:
12 AWG = 25 ga for an extension cord maybe, but in the wall of a house?
That ought to be 20A ?
On Sat, Nov 3, 2012 at 10:37 AM, Fmiser <fmi...@gmail.com> wrote:
Mitch Haley wrote:
Is it OK to run a 240v device on a 25 amp breaker through two
parallel 14-2 NM romex instead of one 10-2 NM?
Yes. But it's likely doesn't satisfy local code. A pair of 14
AWG wires is equivalent to a single 11 AWG wire. NEC ampacity
chart shows 12 AWG is suitable for 25 amp with 60 dec C
insulation.
-- Philip
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